The Internet TESL Journal: A useful list of ESL Listening Podcast links that can be freely subscribed to. Although these podcasts are aimed mainly at native English speakers, some of them can also be very useful to intermediate ESL and EFL students.
The Word Nerds: A weekly podcast about the words, the English language, and why people say things as they do. Covers a wide variety of topics as well as idiomatic English. For advanced learners of English.
Yahoo Audio Search: Yahoo’s new podcast section. The best collection of educational and non-educational audio files including podcasts in English on a wide range of subjects now available online. Learners can even slow down the speed of a podcast file when using Yahoo’s online podcast player.